ValueLab

Value Scale Lab is the essential tool for visual artists and designers who want to master the relationship between color and value. Whether you're painting, illustrating, or designing interfaces, understanding how colors translate to grayscale is critical for creating readable, impactful work. This app gives you a complete studio environment with interactive color picking, real-time value conversion using industry-standard methods (Luma Rec.709, HSL Lightness, HSV Value), and powerful tools for building value-safe palettes that maintain clear separation between steps.